P38A Tuning the 4.0 thor
- Thread starter LR-hobbs
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
The Tornado chip is still locked, so you cant change things and get the info as far as I know.
You change the chipset and thats it.
J
norseman
Well-Known Member
- Posts
- 3,368
- Location
- Essex - UK
To quote our transatlantic friends .. there 'aint no substitute for 'cubes.Why not just fit a 4.6, instant tune up.
Oh and a gearbox.
J
I guess that’s why I also own a 6.3
And would agree
Until I get to the petrol station
J
- Posts
- 37,299
- Location
- North Shropshire
Beef stock, or vegan
Both radiators air con and coolant got replaced under my ownership so there brand new.
Shimming the rockers is something I am trying to wrap my head around , I don't understand how you check the hydraulic lifter clearance or how big of a shim to add.
- Posts
- 4,559
- Location
- Near Heathrow.
You could search the forum or google it. It’s been described many times by peeps changing cams, lifters or doing head skim.
- Posts
- 4,559
- Location
- Near Heathrow.
Essentially it’s getting the preload on the lifters correct. If it’s wrong it impact compression & engine won’t be at its best.
Which I imagen with a torque cam , it's almost definitely going to need shimming. I may try to contact a local specialist closer to the time , to see wether I could get them to come out and check for me.
- Posts
- 17,770
- Location
- Benfleet, Essex
Good job my MY 2000 P38 is approaching 25,000 miles.
It finally feels like it is "loosening up" quite nicely.
Most problems are due to the rubber elements breaking down and failing.
I am perfectly happy with the performance and see no need for any chips (except with battered fish). ;-)
It finally feels like it is "loosening up" quite nicely.
Most problems are due to the rubber elements breaking down and failing.
I am perfectly happy with the performance and see no need for any chips (except with battered fish). ;-)
- Posts
- 4,559
- Location
- Near Heathrow.
Depends on the Cam profile, but yes does need checking & doing. It's whether the heel of the cam is same or lower than the standard that matters. All the guides I have seen requires the tappets to be empty of oil & the gap about 40 thou with the cam on the valve close position.
http://www.v8wizard.com/camshafts_Setting_Tappet_Preload.php
With all things considered I am tempted to see what my local specialist would charge to do the cam for me, while this will be expensive it's cheaper than a new engine or car.
Being new to working on engines this isn't something I want to get wrong , it's my daily car and only car.
brianp38dse
Well-Known Member
- Posts
- 20,402
- Location
- heathrow
Quote
(it's my daily car and only car.)
brave man most of us have a back up motor or two
(it's my daily car and only car.)
brave man most of us have a back up motor or two
Datatek
Well-Known Member
- Posts
- 46,131
- Location
- Near Poitiers SW France
+1 ^^^^^^^^Quote
(it's my daily car and only car.)
brave man most of us have a back up motor or two
- Posts
- 4,922
- Location
- Rotherham
+2^^^^^^
Does it make me more brave that it's a 4.0 that I daily drive to work and isn't on LPG ?Quote
(it's my daily car and only car.)
brave man most of us have a back up motor or two
- Posts
- 37,299
- Location
- North Shropshire
No. If lpg isn't exactly right (hard to do on a modern log system on an old efi car) you can end up with very hot combustion temps.
Brave that it's your only wheels. Been there done that
I have heard lpg can ruin engines due to the gunk , similar to what comes out of a forklift.
- Posts
- 37,299
- Location
- North Shropshire
Not sure what gunk comes out of a forklift, but lpg burns very clean. Perhaps it's residue from additives some engines need for lubrication, the rv8 will happily run on neat lpg
